src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java

*** 1,7 ****
  /*
!  * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 230,239 ****
--- 230,240 ----
      private volatile boolean isFullScreenMode;
      private boolean isFullScreenAnimationOn;
  
      private volatile boolean isInFullScreen;
      private volatile boolean isIconifyAnimationActive;
+     private volatile boolean isZoomed;
  
      private Window target;
      private LWWindowPeer peer;
      protected CPlatformView contentView;
      protected CPlatformWindow owner;
*** 504,514 ****
          nativeSetNSWindowStandardFrame(getNSWindowPtr(), x, y, w, h);
      }
  
      private boolean isMaximized() {
          return undecorated ? this.normalBounds != null
!                 : CWrapper.NSWindow.isZoomed(getNSWindowPtr());
      }
  
      private void maximize() {
          if (peer == null || isMaximized()) {
              return;
--- 505,515 ----
          nativeSetNSWindowStandardFrame(getNSWindowPtr(), x, y, w, h);
      }
  
      private boolean isMaximized() {
          return undecorated ? this.normalBounds != null
!                 : isZoomed;
      }
  
      private void maximize() {
          if (peer == null || isMaximized()) {
              return;
*** 972,981 ****
--- 973,983 ----
          responder.handleWindowFocusEvent(gained, oppositePeer);
      }
  
      protected void deliverMoveResizeEvent(int x, int y, int width, int height,
                                          boolean byUser) {
+         isZoomed = CWrapper.NSWindow.isZoomed(getNSWindowPtr());
          checkZoom();
  
          final Rectangle oldB = nativeBounds;
          nativeBounds = new Rectangle(x, y, width, height);
          if (peer != null) {